#include<stdio.h>

int Sum(int s,int e )
{
    int sum = 0;
    int i = s;
    for(;i <=e; i++)
    {
        sum += i;
    }
    return sum;
}
int main()
{
    printf("process is running\n");

    int start =1;
    int end = 100;

    int result = Sum(start,end);
    printf("process is done,result:%d\n",result);

    return 0;
}
